Bug 1532569 (CVE-2018-5206)

Summary: CVE-2018-5206 irssi: NULL pointer dereference when channel topic is set without specifying sender
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: huzaifas, jskarvad
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: irssi 1.0.6 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 03:36:34 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1532625, 1532627    
Bug Blocks:    

Description Adam Mariš 2018-01-09 11:19:04 UTC 
When the channel topic is set without specifying a sender, Irssi may dereference NULL pointer.

The exploitation of the issue requires a broken ircd or control over the ircd.
Comment 1 Adam Mariš 2018-01-09 11:28:21 UTC 
External References:

https://irssi.org/security/irssi_sa_2018_01.txt
Comment 2 Adam Mariš 2018-01-09 13:17:56 UTC 
Created irssi tracking bugs for this issue:

Affects: fedora-all [bug 1532625]